LXR linux/arch/mips/cobalt/setup.c

   1/*
   2 * Setup pointers to hardware dependent routines.
   3 *
   4 * This file is subject to the terms and conditions of the GNU General Public
   5 * License.  See the file "COPYING" in the main directory of this archive
   6 * for more details.
   7 *
   8 * Copyright (C) 1996, 1997, 2004, 05 by Ralf Baechle (ralf@linux-mips.org)
   9 * Copyright (C) 2001, 2002, 2003 by Liam Davies (ldavies@agile.tv)
  10 *
  11 */
  12#include <linux/init.h>
  13#include <linux/interrupt.h>
  14#include <linux/io.h>
  15#include <linux/ioport.h>
  16#include <linux/pm.h>
  17
  18#include <asm/bootinfo.h>
  19#include <asm/reboot.h>
  20#include <asm/setup.h>
  21#include <asm/gt64120.h>
  22
  23#include <cobalt.h>
  24
  25extern void cobalt_machine_restart(char *command);
  26extern void cobalt_machine_halt(void);
  27
  28const char *get_system_type(void)
  29{
  30        switch (cobalt_board_id) {
  31                case COBALT_BRD_ID_QUBE1:
  32                        return "Cobalt Qube";
  33                case COBALT_BRD_ID_RAQ1:
  34                        return "Cobalt RaQ";
  35                case COBALT_BRD_ID_QUBE2:
  36                        return "Cobalt Qube2";
  37                case COBALT_BRD_ID_RAQ2:
  38                        return "Cobalt RaQ2";
  39        }
  40        return "MIPS Cobalt";
  41}
  42
  43/*
  44 * Cobalt doesn't have PS/2 keyboard/mouse interfaces,
  45 * keyboard controller is never used.
  46 * Also PCI-ISA bridge DMA controller is never used.
  47 */
  48static struct resource cobalt_reserved_resources[] = {
  49        {       /* dma1 */
  50                .start  = 0x00,
  51                .end    = 0x1f,
  52                .name   = "reserved",
  53                .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
  54        },
  55        {       /* keyboard */
  56                .start  = 0x60,
  57                .end    = 0x6f,
  58                .name   = "reserved",
  59                .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
  60        },
  61        {       /* dma page reg */
  62                .start  = 0x80,
  63                .end    = 0x8f,
  64                .name   = "reserved",
  65                .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
  66        },
  67        {       /* dma2 */
  68                .start  = 0xc0,
  69                .end    = 0xdf,
  70                .name   = "reserved",
  71                .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
  72        },
  73};
  74
  75void __init plat_mem_setup(void)
  76{
  77        int i;
  78
  79        _machine_restart = cobalt_machine_restart;
  80        _machine_halt = cobalt_machine_halt;
  81        pm_power_off = cobalt_machine_halt;
  82
  83        set_io_port_base(CKSEG1ADDR(GT_DEF_PCI0_IO_BASE));
  84
  85        /* I/O port resource */
  86        ioport_resource.end = 0x01ffffff;
  87
  88        /* These resources have been reserved by VIA SuperI/O chip. */
  89        for (i = 0; i < ARRAY_SIZE(cobalt_reserved_resources); i++)
  90                request_resource(&ioport_resource, cobalt_reserved_resources + i);
  91}
  92
  93/*
  94 * Prom init. We read our one and only communication with the firmware.
  95 * Grab the amount of installed memory.
  96 * Better boot loaders (CoLo) pass a command line too :-)
  97 */
  98
  99void __init prom_init(void)
 100{
 101        unsigned long memsz;
 102        int argc, i;
 103        char **argv;
 104
 105        memsz = fw_arg0 & 0x7fff0000;
 106        argc = fw_arg0 & 0x0000ffff;
 107        argv = (char **)fw_arg1;
 108
 109        for (i = 1; i < argc; i++) {
 110                strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE);
 111                if (i < (argc - 1))
 112                        strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
 113        }
 114
 115        add_memory_region(0x0, memsz, BOOT_MEM_RAM);
 116
 117        setup_8250_early_printk_port(CKSEG1ADDR(0x1c800000), 0, 0);
 118}
 119
 120void __init prom_free_prom_memory(void)
 121{
 122        /* Nothing to do! */
 123}
 124